Is 7s+8+5s equal to 12s+8

A used electronics store pays $30 for each cell phone, spends $20 refurbishing the phone, and sells the refurbished phone to a customer for $115. a.

In two or more complete sentences, describe what it means for an event to be a compound event.

There are 7 more girls than boys in a class. There are 23 students in the class in all how many girls are there in the class. What are the unknowns in this problem?

X=1+t/1-t (solve for t)

a water tank has 55 gallons of water. Water drains at a rate of 8 gallons per minute. Write a linear equation in slope intercept form to represent the situation

What does |-|-40 equal to?

M∠GHI=98° and m∠JKL=82°. Which statement is true about ∠GHI and ∠JHK ? The angles are supplementary. The angles are neither complementary nor supplementary. The angles are complementary.

Write the equation of a line passing through (5,2) parallel to y=4x-3

Work out the area of a parellogram of base 7cm and height 3cm

Evaluate the expression if a = 4, b = 7, and c = 9. what does ac + b =