The equation T^2 A3 shows the relationship between a planet's orbital period, T, and the planet's mean distance from the sun, A,
in astronomical units, AU. If planety is twice the mean distance from the sun as planet X, by what factor is the orbital period
increased?

The size of a certain cell is 2.5*10^-9m. another cell is 1.5*10^3 times larger. how large is the larger cell in scientific notation?

Another type of subtraction equation is 16-b=7. explain how you would sole this equation then solve it.

According to a study conducted in 2015, 18% of shoppers said that they prefer to buy generic instead of name-brand products. suppose that in a recent sample of 1500 shoppers, 315 stated that they prefer to buy generic instead of name-brand products. at a 5% significance level, can you conclude that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than .18? use both the p-value and the critical-value approaches.