Meriel works in a lab and needs to measure 7.5 grams of a substance with a percent error of less than 5%. What is the smallest and largest amount they can measure to stay under this percent error?

Step-by-step explanation:

A common way of measuring the mass of objects is to use balance scales. A balance scale works by placing the object you want to weigh on one side and adding gram masses to the other side until the scales are level. Masses for weighing usually come as 1 g, 5 g, 10 g, 20 g or more!