Solve.ABC phone company charges $21 per month plus 8¢ per minute of phone calls. XYZ phone company charges $15 per month plus 10¢ per minute of phone calls. How many minutes of phone calls in a month make XYZ phone company the better deal?
A. More than 30 minutes
B. Less than 30 minutes
C. More than 300 minutes
D. Less than 300 minutes
Answer: D
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Solve the problem.Use the tables to evaluate the given composition.f(g(3)) 
A. 14 B. 5 C. 10 D. 3
Graph the parabola.x = -2(y - 5)2 + 5 
A. 
B. 
C. 
D. 
Use the simplex method to solve the linear programming problem.Alan wants to invest a total of $21,000 in mutual funds and a certificate of deposit (CD). He wants to invest no more in mutual funds than half the amount he invests in the CD. His expected return on mutual funds is 8% and on the CD is 4%. How much money should Alan invest in each area in order to have the largest return on his investments? What is his maximum one-year return?
A. Maximum one-year return is $1680 when he invests $21,000 in mutual funds and $0 in the CD. B. Maximum one-year return is $1120 when he invests $7000 in mutual funds and $14,000 in the CD. C. Maximum one-year return is $840 when he invests $0 in mutual funds and $21,000 in the CD. D. Maximum one-year return is $4200 when he invests $14,000 in mutual funds and $7000 in the CD.
Refer to the following recipe to first estimate the answer and then use multiplication or division to find the exact answer. Simplify. Old Grandma's Fork Cookies 1
cups brown sugar 1
cups white sugar 1
cups shortening 1 pinch salt 3 eggs 2
tsp soda 2
/> tsp cream of tartar 1
tsp vanillaCream sugars and shortening. Beat in remaining ingredients. Add flour to stiffen like regular cookie dough. Roll into balls, then flatten with a fork. Cook until brown.If the recipe is tripled, how much soda will be needed?
A. Estimate: 9 tsp
Exact: 7
tsp
B. Estimate: 9 tbsp
Exact: 7
tbsp
C. Estimate: 6 tsp
Exact: 6
tsp
D. Estimate: 7
tsp
Exact: 9 tsp