How do you explain mental math to multiple two numbers

What comes next? 131,517,?,123

A number has a 7 in the thousands place, a 2 in the tens place, a 1 in the ones place, and a 0 in the hundreds place. What is the number?

Solve using substitution method 3y + x = 4, x = 2y - 1

Should I buy a gucci belt or nah

What is the factored form of 4x2 + 23x - 72?

You are a receptionist at a doctor's office. A patient's bill for a checkup totals $85.00. The patient's health insurance requires the patient to pay 20% of the total bill. How much should the patient pay for the checkup?

At the grocery store, you can purchase loose lemons at 2 for $0.99. You can also buy a bag of 6 lemons for $2.50. Which is a better buy

What is bigger - 3/4 or - 1

which of the following describes how to translate the graph y = |x| to obtain the graph of y = |x-1| - 1

Which statement best demonstrates why the following is a non-example of a polynomial? 33 y squared all over x squared - 62y2xz - 35z2y2 The expression has a variable raised to a negative exponent. The expression has a negative coefficient.