How do write 31,540,000,000 in scientific notation?

Elenas ain't bought her a $150 savings bond when she was born. When Elena is 20 years old, the bond will have earned 105% in interest. How much will the bond be worth when Elena is 20 years old?

The square of a positive number is 24 more than 5 times the number

Which is equivalent to 3 square root 81/4

What is the factored form of this expression 4x^2 - 12x+9

A class has 18 boys and 14 girls. One student is selected. F is the event of selecting a girl, and K is the event of selecting Kate, one of the girls in the class. Determine P (K | f. and P (F | K).

What is the amplitude of the sinusoid given by y=-5sin (7x) ?

Frank buys p pounds of oranges for $2.29 per pound and the same number of pound ls of apples for $1.69 per pound. What does the expression 2.29p + 1.69p represent?

This net consists of a square and 4 identical triangles. What is the surface area of the sold this net can form? Not drawn to scale

What times what equals 36

How many solutions are there to the following system of equations? 4x - 8y = 0 -3x + 8y = - 7