7 is right bit I just don't know on 5 and on how to interpret its meaning so 5 is 0.90 and 6 12 just help me explain the meaning thank you

Solve the following inequalities and show the solution on a number line. 2x+3< 3(4x+5)

An investment decreases in value by 30% in the first year and decreases by 40% in the second year. what is the percent decrease in percentage in the investment after two years

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches.approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *