Peyton plans to deposit her next paycheck into her savings account. She makes $12.50 per hour and her paycheck will be for h hours of work. The expression 12.50h + b represents the amount of money in her savings account after she deposits her next paycheck. What does b represent in the expression?

(a) solve h+2/6 = h-3/4(b) solve the following simultaneous equations. 2x = y + 66x - 2y = 13x = ? y = ?

Standard deviation of 19,29,21,22,23

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.