Twice the sum of a number and 16 is 52. what is the number?

Select the correct answer and solve for y

The first week samantha learned to read braille, she could read 10 words per minute. in the second week she increased her speed by 20%. in the third week she increased her speed again by another 25%. how many words could she read per minute by the third week? hurry and tell me!

Write the expression 7x^3-28xy^2 as the product of 3 factors