Solve the problem.Let x represent the number of textbooks purchased at $28 per book, and let y represent the total amount of money spent on textbooks. Use an equation to calculate the cost of 2 textbooks.

A. $56
B. $14.00
C. $112
D. $28.00


Answer: A

Mathematics

You might also like to view...

Solve the differential equation. = 6

A. y = 2x3 + x3/2 + C B. y = (2x3/2 + C)2 C. y = 4x3 + C D. y = 2x3/2 + C

Mathematics

Find the volume of the described solid.The base of the solid is the disk x2 + y2 ? 9. The cross sections by planes perpendicular to the  between  and  are isosceles right triangles with one leg in the disk.

A. 72 B. 90 C. 144 D. 18

Mathematics

Sketch the curve of the vector function r(t) = (t², t³, t), t ? 0, and indicate the orientation of the curve.

What will be an ideal response?

Mathematics

In the series resonant circuit below, Vin = 8.0 V and R = 10 Kê. Find VO


a. 3.3 V
b. 4.0 V
c. 5.6 V
d. 6.6 V
e. 8.0 V

Mathematics