What is the solution to 4x + 7 = 9

The growth of a new strain of bacteria is represented by y = 79.31 (1.48) x, where x represents the number of days and y represents the number of bacteria. Which is the best prediction for the number of bacteria on day 7? A. 821 bacteria B.

Solve the equation 6-x-x=18 A. - 6 B. 6 C. 9 D. - 9

Joan walked 23 1/4 miles in a week. Her sister walked 69 3/4 miles during the same week. How many times farther did Joan's sister walk than Joan?

What is the correct setup for finding the cost of renting a boat when you must pay $15 down and $7.50 for each half-hour? (Hint: Use C for cost and t for time.)

How can 42.0 be writing in expanded form

Find the length of the rectangle if x=10

Is 4,300 m greater, less, equal to 43km

For all values of x. which expression is equivalent to (3x + 2) + 2 (3x + 2)

walter's salary this year is $23,400. If this is $1,700 more than he made last year, what was his salary last year?

Joel spent $15.23 on a gift for his sister and $18.90 on a gift for his mother. how much did he spend altogether? a. $33.13 b. $34.03 c. $34.13 d. $34.23