How much did briana save by purchasing a backpack that cost $45 with a sales promotion of 20% off instead of a backpack
that cost $42 with a sales promotion of 10% off?
o $1.80
o $3.00
$4.80
$6.90
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Which of the following does the reading test of the sat ask you to do ?

Which statement best describes gravity? it is the force that repels only very small objects. it is the force that acts between objects with zero mass. it is the force that sometimes acts only on very large objects. it is the force that acts between any two objects in the universe.

Nathan is an ecologist. he’s studying the effect of secondary consumers on primary consumers. his current research focuses on a population of blue jays and crows. they eat caterpillars and mice. if the number of blue jays increases, what are the likely effects on other populations? 1the number of crows will increase. 2the number of mice will decrease. 3the number of mice will remain the same. 4the number of caterpillars will decrease.