Souvenir hats, T-shirts, and jackets are sold at a rock concert. Two jackets, two hats, and two T-shirts cost & $68. Three jackets, three hats, and five t-shirts cost $110. Two jackets and three T-shirts cost $70. Find the prices of the individual items.

The system of equations graphed below has how many solutions? y = 2x + 2

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.

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