steve is x years old. his sister is, Diane, is 6 years older than steve. their grandmother is four times as old as Diane. Write and simplify an expression that represents their grandmothers age in years.

How much pure acid is in 780 milliliters of a 12 % solution?

Rita, Tony, and Deon have a total of $86 in their wallets. Rita has $ 10 less than Tony. Deon has 2 times what Rita has. How much do they have in their wallets

What is the reciprocal of - 3/7

Write 6 powered 0 in positive exponents

Find the value of x for the equation to be true. -8x - 3 (2x + 1) = 67

Which expressions could complete this equation so that it has an infinite number of solutions? 9x-3 (x+8) = A. 6x-24 B. 6 (x-3) + 6 C. 14+5x-34 D. 8 (x-3) - 2x

The number of horses occupying stalls at the county fairgrounds can be modeled by the following function, where x represents the number of days since the first of June. h (x) = -3x^2+30x+225.

Erik took a trip to see his friend Mike who lives 308 miles away. He left his place at 10 AM driving at 70 mph. In 2 hours, his friend Mike left his place driving towards Erik at an average speed of 50 mph. At what time will they meet?

Selecto two ratios that are equivalent to 3:12

Solve this equation for x. Round your answer to the nearest hundredth. 0.69=log x