6. Elena sells cakes for special occasions. She charges her customers a one-time design fee plus a rate for each serving the cake yields. The table shows the cost of a cake from Elena based on the number of servings.
SERVINGS
100
150
200
250
TOTAL COST
$280
$405
$530
$655
Based on the table, what rate does Elena charge customers per serving?
$2.80 per serving
b. $2.70 per serving
c.
$3.00 per serving
d. $2.50 per serving

For which pair of functions is (gof)(a)=|a|-2?

The avenues in a particular city run north to south and are numbered consecutively with 1st avenue at the western border of the city. the streets in the city run east to west and are numbered consecutively with 1st street at the southern border of the city. for a festival, the city is not allowing cars to park in a rectangular region bordered by 5th avenue to the west. 9th avenue to the east, 4th street to the south, and 6th street to the north. if x is the avenue number and yis the street number, which of the following systems describes the region in which cars are not allowed to park? 5th ave 9th ave

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.