Faça o estudo do sinal da função y = - 4x+16 e indique para que valores de x a função é positiva, negativa ou nula: a) positiva x>5, negativa x-4, negativa x<-4 e nula x=-4 c) positiva x4 e nula x=4 d) positiva x-5 e nula x=-5

What is 23 minutes after 2:32?

What is the perimeter of a baseball diamond 90 ft on each sode

How do I solve w (x) = 4x 5; find w (-8) ?

A golfer has two options for membership in a golf club. A social membership costs $1775 in annual dues. In addition, he would pay a $65 greens fee and a $25 golf cart fee every time he played. A golf membership costs $2425 in annual dues.

Rico, Carolina, and Gloria have pizza that they are going to be sharing with other people. Rico gave away 1/3 of his cheese pizza to Carolina and she gave him 3/7 of her pepperoni. Rico then gave Gloria 1/7 of his cheese pizza.

Martha always tries to exercise at least 30 minutes a day. Write an inequality to represent the number of minutes Martha exercises each day.

A swimming pool has perimeter of 72 feet. The short sides measure 16 feet. What is the length of the longer sides of the pool

At the beginning of an environmental study, a forest covered an area of 1500km2. since then, this area has decreased by 7.1% each year. let t be the number of years since the start of the study. let y be the area that the forest covers in km2.

What are the transformations of f (x) = -7 (x-9) ^2+3

A farmer water 3/8 of a field what percentage is equivalent to the fraction of the field the farmer wanted?