How can we add without a caculator

If r (X) = 2-x^2 and w (X) = X-2, what is the range of (w*r) (X) A) (-infinity, 0] B) (-infinity, 2] C) [0, infinity) D) [2, infinity)

What is the product? (2x - 1) (x+4) 2x?-4 2x+4 2x+7-4 2x? - 7x-4

Which terms could be used as the first term of the expression below to create a polynomial with a degree of 5 written in standard form? Check all that apply. + 2x2y2 - 3xy3 -4x3y2 x3 8.4x4y2 5x4y -xy3

A rate in which the second quantity is one unit

A farmer sees 56 of his cows out of the barn. He knows that he has 83 cows altogether. Let c represent the number of cows still in the barn. Could c = 33? c + 33 = 56; yes 56 + c = 83; no 83 + c = 56; no 56 + 83 = c; no

If you hike 1/2 mile every 1/5 hour how far do you hike in two hours?

How do i find the value of a parallelogram

After the 30% discount was applied, Patricia paid $45.50 for the ring. What was the original price of the ring

What is the most answered question on this website? Could this question break its record? Final Question ... Will it?

Frank's Football Gear is having a sale on helmets. The sales price, not including tax is $125.50. If the sale is 30% off all helmets, what is the regular price of the helmet to the nearest cent?