The first square number is 1, and the sum of the first 20 square numbers is 2870. Work out the sum of the first 21 square numbers.

Which expression is the simplest form of 4 (3x+y) + 2 (x-5y) + x^2

Samuel earned 18.90 working last weekend. He worked for 2 and 1 fourth hours. Which equation and solution represents e, the amount Samuel earns each houre at his job

Is this TRUE or FALSE? To make a sketch of any rational function whose numerator is a number and whose denominator is a factored polynomial, use the following rule of thumb: The function has a vertical asymptote at every x-value where its numerator

Sofia and her mother decided to start a tomato garden they went to the store and purchase 48 tomato plants Sophia wanted to have 8 plants in each row how many rows would they have?

Which pattern could be used to create the sequence? 500, - 100, 20, - 4 A: Multiply the previous term by - 5 B: Divide the previous term by - 5 C: Subtract 600 from the previous term D: Add - 200 to the previous term

Negitive 2x minus 3 equals 5 what is x equal too

What is - 54 minus - 25

Two triangles have side lengths 3, 4, 5 and 6, 8, 10, respectively. the triangles are similar to each other. a. True b. False

A 180 ft long board is cut into 3 pieces. The second piece of board is twice as long as the first. The third piece of board is six times as long as the first. What is the length of the first piece of the board?

If f (x) = 3x and g (x) = 5x-3 find gf (x)