4x+9+3x=30

solve for x

The Acme Car Company sold 37 vehicles in June. How many compact cars were sold in June?

How much do 10 pieces of candy cost if one thousand pieces cost $10?

Andrea has 800L of acid solution. She obtained it by mixing some 7 % acid with some 10 % acid. Her final mixture of 800L is 9.25 % acid. How much of the 7 % and 10 % solutions did she use to make her final mixture?

An arrow is shot straight up from a cliff 58.8 meters above the ground with an initial velocity of 49 meters per second. Let up be the positive direction.

Divide 645 by 3 to get your answer

A city of 100,000 people is growing at a rate of 5.2% per year. Assuming this growth rate remains constant, estimate the population of the city 5 years from now.

The beginning balance of a credit card account is $500. The monthly interest rate is 0.012. If a payment of $100 is made on the last day of the month, what is the ending balance?

If 25% of an item is $17.00 what is the original price?

Slope and y intercept

A website requires a 7-digit password. How many different passwords can be made using the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9 if each number can only be used once? A. 120 B. 70 C. 5,040 D. 604,800