Multiply the polynomials using the FOIL method. Express the answer as a single polynomial in standard form.(3x - 8)(x + 10)
A. x2 + 22x + 21
B. 3x2 + 22x - 80
C. x2 - 80x + 22
D. 3x2 + 21x - 80
Answer: B
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Match the equation to its graph.y = -2x + 4
A. 
B. 
C. 
D. 
Perform the indicated operations and simplify the result. Leave the answer in factored form.
? 
A. 
B. 
C. 
D. 
Write the vector as a sum of scalar multiples of u and v.
a. w1b. w2c. w3d. w4
A. a. w1= u - v;
b. w2 = 
v;
c. w3 = u + v;
d. w4 = v - u
B. a. w1= u + v;
b. w2 = -
v;
c. w3 = u - v;
d. w4 = v - u
C. a. w1= u + v;
b. w2 = 
v;
c. w3 = u - v;
d. w4 = v - u
D. a. w1= u - v;
b. w2 = -
v;
c. w3 = v - u;
d. w4 = u + v
Solve.Bob owns a watch repair shop. He has found that the cost of operating his shop is given by 
where c is the cost in dollars, and x is the number of watches repaired. How many watches must he repair to have the lowest cost?
A. 41 watches B. 83 watches C. 39 watches D. 30 watches