Whats the answer to this - 4e-9=19

Travis deposited $100 into a savings account that earns 6% compounded monthly. He plans on keeping the money in the account for 6 months and depositing an additional $100 each month. at the end of 6 months, how much interest will Travis have earned?

An ice-cream shop sold 2.87 gallons of rocky road ice cream yesterday. The shop sold 0.449 gallons of rocky road ice cream today. What was the total amount of Rocky Road ice cream sold yesterday and today? Enter your answer, as a decimal, in the box.

Wilson has a balance of $890 on a credit card with an APR of 18.7%, compounded monthly. About how much will he save in interest over the course of a year if he transfers his balance to a credit card with an APR of 12.

Write four hundred forty-eight and three tenths in standard notation

The Phillips family went to dinner at red lobster and had a bill for $57.80. They want to leave an 18% tip. There is a 6.7% sales tax. What is their total cost for dinner

In a popular casino game, you can bet one whether a ball will fall in an arc on a wheel colored red, black, or green.

The ends of the base of an isoceles triangle are (2a, 0) and (0, a). the equation of one ide is x=2a. find the eqns of the base, the remaining sides and the coordinates of the vertex.

The scale factor of the blueprint of a garage door to the actual garage door is 0.05. the are of the actual garage door is 220 ft^2. What is the area of the garage door on the blueprint? A. 0.55ft^2 B. 5.5ft^2 C. 11ft^2 D. 55ft^2

Which of the following represents side lengths that form a Pythagorean triple? A. 7, 8, 9 B. 1, 2, 3 C. 4, 5, 6 D. 3, 4, 5

Gwent pour 256 milliliters of water in to Ravi Henry pours 189 milliters of water in to Ravis. Ravis now contains 800 Milliters of water hiw nuch water was in Ravis to begin with?.