Jared is taking diving lessons and starts 20 feet below sea level. he then dives down another 10 feet. from there, he goes up 15 feet. which equation shows jared's current level?
a.-20 + 10 + 15 = 5
b. 20 + (-10) + (-15) = -5
c. -20 + (-10) + (-15) = -45
d. -20 + (-10) +15 = -15

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items

The marked price of an article is 25% above its selling price and the cost price is 30% less than its marked price . find the discount percent and gain percent. only a brainlest can solve it i will mark you brainlest

Type the correct answer in the box. consider the system of linear equations below. rewrite one of the two equations above in the form ax + by = c, where a, b, and c are constants, so that the sum of the new equation and the unchanged equation from the original system results in an equation in one variable.