What is - 8 (7r-8) - 3r=10-5r? i got r=1 for the answer but im not entirely sure im right

J'Neices cell phone plan is $79 per month for unlimited calling plus 1000 text messages. Text messages over 1000 cost $0.15 each. Unfortunately, she last month, she texted 2100 times. What is her total phone bill? Select one: a. $79 b. $315 c.

How can you identify the parts of an expression using mathematical terms?

Find (3.36 x 1018) (5.0 x 106) (2.4 x 107), expressed in scientific notation. A) 2.8 x 106 B) 2.8 x 105 C) 2.8 x 104 D) 3.6 x 104

Solve for x. Show your work. -1/2 x < - 12

A sales associate at a computer store receives a bounces of $100 for every computer he sells. he wants to make $2500 in bonuses next month. Write and solve an inequality to find the minimum number of computers he must sell

The box plots represent the ages of pennies in two 50-cent rolls. By looking at the plots, Beth says that the two means are about 5 years apart.

Which is bigger nine halves or nine quarters? How do you know?

In triangle abc, ab=90 in, bc=80 in, and angle b measures 50°. what is the approximate perimeter of the triangle? a) 242.4 in. b) 265.3 in. c) 308.3 in. d) 324.1 in.

The sum of two numbers is 180. one number is 5 times the number

What is the vertex of the parobala y = (x-5) (x-1)