I don't know how to do "log" ... can someone tell me what it is and how to do it

Evaluate 8y when y=4

Gas mileage is the number of miles you can drive on a gallon of gasoline. A test of a new car results in 520 miles on 20 gallons of gas. How far could you drive on 40 gallons of gas? What is the car's gas mileage? Show and explain your work.

In which of the following division problems will the quotient be larger than the dividend? A. 1/2 divided by 7 B. 10 divided by 5 C. 1/4 divided by 2 D. 5 divided by 1/6

270 degrees times pi over 180

In a court case reviewed by the Supreme Court the plaintiffs alleged that the method for selecting juries in a county in Texas was biased against Mexican Americans.

Find the circumference of a cercle with the radious of 5.5 in. Use 3.14 for n round the nerest tenth

What is the solution tot the system of equations graphed below Y=2x-7 Y=-x-1 A. (4,1) B. (3,-2) C. (0,-1) D. (2,-3)

Cheryl and four of her friends went hiking on Saturday. They hiked a total of 6 miles in four hours. What is the average speed that they hiked?

Calculate the length of the circumference of a circle with diameter of 10.4

Desiree had 35 stickers. She gave each of 3 friends the same number of stickers. She now has 20 stickers left. She then gives the same number of stickers to each of another 5 friends. How many stickers to each of another 5 friends.