3x-4 when x = 7 how do I do this equation I'm confused

A stone is dropped into some water and a circle of radius r is formed and slowly expands. The perimeter of the circle is increasing at 3 m / s. At the moment the radius is exactly 2m, what rate is the radius of the circle increasing?

A. If m<7 = 37, what is in m<4? b. If m<7 = 37, what is in m<2? c. Describe the relationship between <4 and <8. d. Describe the relationship between <3 and <5.

Is a rational number divided by a rational number always rational?

2/15, 3/10, 7/30 What is the least common denominator

Your starting salary at a company is 45000 dollars, and you get a raise of 2000 dollars each year. Let t represent the number of years since you joined the company?

How to find the roots of h (x) = 2x^2 + 26

The bull's eye on an archery target has a radius of 3 inches. The entire target has a radius of 9 inches. To the nearest 10th, find the area of the target outside the bull's eye.

Which measure is equivalent to 110mL?

13,006,017 in word form

Potatoes cost janice $1 per pound, and she has $5 that she could possibly spend on potatoes or other items. if she feels that the first pound of potatoes in worth $1.50, the second pound is worth $1.14, the third pound is worth $1.