Fifteen years from now Ravi’s age will be four times his present age. What is Ravi’s present age? i need it with explanation pls

At your job you're paid $50 per week plus $3 per sale at least how many saled do you need to make in order to have over $250

Masons cell phone company charges $0.12 for every text message he sends plus $2.50 per month if mason sent 25 messages this month how much money does he owe the one with the correct answer and explanation gets 10 points and is marked as the brainliest answer

Use the distributive property to factor the expression. 5xz + 10yz