Defg is a rectangle. df = 5x - 3and eg = x + 5. find the value of x and the length of each diagonal.
a. x = 1, df = 6, eg = 6
b. x = 2, df = 7, eg = 12
c. x = 2, df = 6, eg = 6
d. x = 2, df = 7, eg = 7

What is the equation and solution for the sentence? the sum of a number and thirty-one is one hundred thirteen. write the equation as n-31=113 and subtract 31 from both sides. the answer is 82. write the equation as n+31=113 and subtract 31 from both sides. the answer is 82. write the equation as n+31=113 and add 31 to both sides. the answer is 144. write the equation as n-31=113 and add 31 to both sides. the answer is 144.

The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?