The altitude a (in feet) of a plane t minutes after liftoff is given by a=3,400t + 600. How many minutes after liftoff is the plane at an altitude of 21,000 feet?

1. What number is 59% of $45?

Expand the expression as a product of factors (x-t) 3

3/4 (8p+12) + 3/8 (8-16p)

which are feasible equations of at keast squares regression line fir the annuak population change of a small country from year 2000 to the year 2015? select all that apply

Choose the answer. 2. (3 pt) Stephanie made 36 muffins. She made 24 apple muffins and the rest were banana. What is the ratio of apple muffins to banana muffins? A. 2 to 1 B. 12 to 36 C. 24 to 36 D. 2 to 3

5. Andre is solving the equation 4 (x + 3) = 7. He says, "I can subtract from each side to get 4x = 1 and then divide by 4 to get x = " Kiran says, "I think you made a mistake." a. How can Kiran know for sure that Andre's solution is incorrect? b.

On three examinations, Dana received scores of 84, 89, and 78. What score does Dana need on the fourth examination to raise his average to 85?

You have a Spanish meeting every forth day and a math club meeting every tenth day. Today you have both meetings. In how many days will you have both meetings on the same day again?

5.2 turned into a fraction in simplest form.

A certain laptop is really popular and sells for $199.99. Since sales are so good, the store raises the price by 13%. What is the cost of the laptop after the markup?