Evaluate the expression when x = - 18. x-10/4

Very confused on how to solve this one.

The ratio of the lengths of corresponding parts in two similar solids is 5:1, what is the ratio of their surface areas

You can buy 4 pieces of chicken for $6.80. Write an equation that can be used to express the relationship between the total price (t) and the pieces of chicken (c) you buy.

Using the graphing function on your calculator, find the solution to the system of equations shown below. 3y + 3x = 2 y + x = 8 A. x = 1, y = 1 B. No solution c. x = 3, y = 3 D. More than 1 solution

Use your calculator to find the approximate volume in cubic units of the solid created when the region under the curve y = sin (x) on the interval [0, π] is rotated around the x-axis.

A round jar lid has a diameter of 8 centimeters. What's the circumference.; use pi

Solve for x: 4+3/5 (15+2x) = 25

Suppose Janice has a beginning bank balance of $467. She makes one ATM withdrawal for $30 and writes 4 checks for $16.80, $22.74, $12.38, and $14. What is her ending balance?

Xsquaredminus 4xplus3=0

A merry go round revolves 2 times per minute, jack is 10 feet from the center while bob is 14 feet from the center

An office uses 478 lb of paper one week. The paper comes in packages that hold 18 lb of paper each. How many packages of paper does the office use each month?