30% of the students in sixth grade have a pet. There are 130 students in the sixth grade how many of them have a dog as a pet?

The cost for children under twelve at a certain buffet restaurant is a base charge of a dollar plus twenty-five cents for each year of the child's age. Represent this cost as an expression, using y to stand for the child's age in years.

A model car is 7.5 inches long made with a scale of 2 inches = 48 inches. How long is the actual car?

What is 0.25 : 1.5 in simplest form

Newton currently has an account balance of $6,225.18. He opened the account 15 years ago with a deposit of $4,543.11. If the interest compounds daily, what is the interest rate on the account? 30.3% 7.7% 58.3% 2.1%

A company has two packaging machines in a unit, each with a different daily capacity. The capacity of machine 1 is defined by the function f (m) = (m + 4) 2 + 100, and the capacity of machine 2 is defined by the function g (m) =

You roll a six sided die and pull a card from a standard deck of 52 cards what is the probability that you roll a five and draw a heart

Dimitri earns $4.50 for each box of fruit picked a) how much does he make for picking 20 boxes? b) how much boxes must he pick to earn at least $150? c) if he takes 4 hours to pick 12 boxes what is his hourly rate of pay?

Amanda increased the amount of protein she eats every day from 48 to 54 g. By what percentage did Amanda increase the amount of protein she eats.

Mr. Sanchez's class sold fruit pies for $1.55 each and Mr. Kelly's class sold bottles of fruit juice for $1.40 each. Together, the classes sold 60 items and earned $88.20 for their school. Write and solve a system of equations that model the problem.

Outside temperatures over the course of a day can be modeled as a sinusoidal function. Suppose the high temperature of105°Foccurs at 5PM and the average temperature for the day is85°F. Find the temperature, to the nearest degree, at 9AM.