5x+y=27 y=4x using substitution method

Julia has something that's 0.5 pounds and it cost 16$ per 0.5 pounds If she had 0.75 pounds how much money would that be?

Every prime number greater than 10 has a digit in the ones place that is included in which set of numbers below?

Angelica is shopping for a new cell phone plan. she wants a cell phone plan that will cover unlimited calling texting and up to 4gb of data. she finds a plan defined by the function f (x) = 9.99x + 120 where x represents the additional gb of data.

Sometimes in mental arithmetic, calculations are done in a different order because the numbers are more "convenient." For example, consider the following calculations: 13.2.5 = 26.5 = 130 and calculations. However, the 13.2.

A home alarm system randomly assigns a five-character code for each person. The code will not repeat a character. The characters are 0, 1, 2, 3, 4, 5, M, V, T, G, Y, or R. What is the total number of codes that can be randomly assigned?

4) 4n2 + 7n - 135 = 0

Of the 15-year-olds at a karate school, 6 have black belts and 20 have brown belts. Among the 16-year-olds, 5 have black belts and 9 have brown belts. Which age group has a higher ratio of black belts to brown belts?

What is 180 squared show your work

What is the range of y=2 to the power of x

How gay are you and why you are gy