Which is the correct estimation and justification for the problem shown below?

V10 = ?

about 5, because 2 x 5 = 10

about 5, because 5 + 5 = 10

about 4, because 4 x 4 = 16

about 3, because 3x3 = 9

What is 5 times 8 + 5

The surface area of a rectangular prism is increased by a factor of 16. By what factor is the volume of the figure instead?

Helen has only 10 questions left to do of her Math homework. She has 120 minutes before it's her bedtime and it takes 5 minutes to do each Math question.

15 paperclips or equal size weigh 2 grams altogether. Is the number of paperclips proportional to their weight?

The product of a number and 2 is 20 less than the product of the number and - 3. What is the number?

The graph shows a function that models the value V in millions of dollars of a stock portfolio as a function of time T in months over an 18-month period on what interval is the function decreasing on what interval is the function increasing

On his vacation, Chad spent 1/8 of the day swimming, 1/6 of the day shopping, and 1/4 of the day water skiing. How much of the day was left?

The equation of a line is x + 3y = 14. What is the y-intercept of the line? -14 14/3 14 314

What percent is equivalent to 1840? A. 18% B. 22% C. 40% D. 45%

Round 6.4 to the nearest whole number