15 points and marked a brainlest i keep promises 5 mintes

which expression is equivalent to −30+(−40)+(−70) ?

a. −(30−40)+(−70)

b. −30−(40−70)

c. −30+(−70)+(−40)

d. 30+40+70

Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. when the check comes, it says they also need to pay $3.99 in sales tax. what percentage of the subtotal is the sales tax

Paco orders an ice cream for $1, but realizes his wallet is at home and he only has 3/20 of $1 with him. if his mom pays the remaining 7/20 of the dollar, how much will she pay? $0.05 $0.15 $0.85 $0.95

The sum of four times a number and three is two times the number minus twenty nine