How to count the number of nodes in a binary tree

If i buy something for 60$ but it was 1/4 off what is the regular price'

Explain how you would graph the system of equations and why T = 5c + 36 T=10c

The ordered pairs (1,8) (2,16) (3,24) (4,32) and (5,30) represent a function. What is a rule that represents this function

Find two different fraction whose sum is equal to 1.

Kyle is using 4 pounds of peaches to make pies. How many ounces of peaches is Kyle using for the pies? (1 pound = 16 ounces)

William earns $15 each time (t) he mows a lawn. Which equation can be used to determine how many lawns William mowed if he earned $75?

Solve for x: 9^ (x-8) = 3^ (4x-12)

Trey is estimating the length of a room in his house. The actual length of the room is 17 m. Trey's estimate is 15 m. Find the absolute error and the percent error of Trey's estimate. If necessary, round your answers to the nearest tenth.

Which ordered pair is a solution of the equation y = 4x? (1, 3) (-1, - 4) (-4, - 1) (1, - 4)

A bowl contains 3 red, 8 blue, and 7 black beads. Margaret randomly selects 3 beads one after the other without replacement. Find the probability of getting a red, blue, and black bead, in that order.