Evaluate the Following numerical expressions 6 + 2^3 x 3
Now it says that the answer is 30 but I get 42. Am I doing something wrong? Is my math Incorrect? Someone explain please.

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

Askateboard ramp is in the shape of a right triangle what is the height of the ramp

Which is the scale factor proportion for the enlargement shown?