Use estimation to determine which calculation is incorrect.
A. 
B. 
C. 
D. 
Answer: A
You might also like to view...
Solve the problem.The parabola x2 = -12y is shifted down 6 units and right 2 units. Find an equation for the new parabola and find the new vertex.
A. (x - 2) 2 = -12(y + 6); vertex; (2, -6) B. (y + 6) 2 = -12(x - 2); vertex; (-6, 2) C. (x + 6) 2 = -12(y - 2); vertex; (-6, 2) D. (x + 2) 2 = -12(y - 6); vertex; (2, -6)
Solve.Use the bacteria parable to determine how many bacteria are in the bottle at 11:10.
A. 20 bacteria B. 12 bacteria C. 29 bacteria D. 210 bacteria
Find a polar equation for the conic. A focus is at the pole.e = 1; directrix is parallel to the polar axis 3 above the pole
A. r = 
B. r = 
C. r = 
D. r = 
Julia made a purchase at a furniture store, but it was too big and did not fit into her car. So, she arranged to have the store deliver the purchase for her. She paid for her purchase, plus the sales taxes, plus the fee. The taxes are 5% and the fee is $25. Write a function t(x) for the total, after taxes, on the purchase amount x. Write another function f(x) for the total, including the delivery fee, on the purchase amount x. How much money did Julia spend, if she made a $440 purchase?
A. t(x) = 0.05x ; f(x) = x +25; $47 B. t(x) = 1.05x ; f(x) = x +25; $487.00 C. t(x) = 1.05x ; f(x) = x +25; $488.25 D. t(x) = 0.05x ; f(x) = x +25; $487.00