Mrs. Kemp had 20 students in her kindergarten class at the beginning of the year. She had 23 students at the end of the year.

What was the percent of increase in the number of students from the beginning of the year to the end of the year?

What is the equation of this graphed line? enter your answer in slope-intercept form in the box.

Data from 2005 for various age groups show that for each $100 increase in the median weekly income for whites, the median weekly income of blacks increases by $105. also, for workers of ages 25 to 54 the median weekly income for whites was $676 and for blacks was $527. (a) let w represent the median weekly income for whites and b the median weekly income for blacks, and write the equation of the line that gives b as a linear function of w. b = (b) when the median weekly income for whites is $760, what does the equation in (a) predict for the median weekly income for blacks?

How many times larger is 6 × 10^12 than 2 × 10^7? a. 30,000 b. 3,000 c. 3,000,000 d. 300,000