One winter morning in canada, the temperature at 8: 00 was 1.5°c. from 8: 00 to 11: 00, the temperature increased by 0.7°c. from 11: 00 to 2: 00, it dropped 2.6°c, and from 2: 00 to 5: 00, it decreased by 0.9°c. what expression shows the temperature in °c at 5: 00 p. m.?

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Consider the function represented by the equation 1/2 j + 1/4 k equals 3 which shows the equation written in function notation with j as the independent variable

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.