Can someone simplify 25-4-9x+2x?

Multiply (2.4 ⋅ 1014) ⋅ (4 ⋅ 107). Express the answer in scientific notation.

Use the Distributive Property to find (x + 1) (x + 3).

What two numbers are subtracted to find the interquartile range?

Marta wants to have at least an average of 90% in her class. Her grade is calculated by averaging her homework score and the scores from five exams.

When Ryan was born, he weighed 7 pounds. At 6 months, he weighed 11.2 pounds. Amanda weighed 6 pounds when she was born, and 12.9 pounds at 6 months. Which baby had a greater percent increase in weight? Explain.

Write an expression that will find the weight o

2. Vanessa wants to model how a car's maintenance costs change as the distance someone drives the car increases. What would be an appropriate unit for Vanessa's purpose? Miles/$ Gallons/Miles $/Miles $/Gallons

a population of rabbits triples every month the population starts with two rabbits how many rabbits are there in 3 months?

3. What is the x-coordinate of the vertex of y = 2 (x + 8) (x - 10) ?

Find the values of x for which the equation cos x = 1 is true