(01.06 mc) jonna is 4 years older than her brother. which of the following expressions shows the sum of their ages if b represents jonna's brother's age? (2 points) 2b + 4 b + 4 2(b + 4) 4b

The manufacturer of a new product developed the following expression to predict the monthly profit, in thousands of dollars, from sales of the productwhen it is sold at a unit price of x dollars.-0.5x^2 + 22x - 224what is represented by the zero(s) of the expression? a.the profit when the unit price is equal to 0b.the unit price(s) when the profit is equal to 0c.the profit when the unit price is greatestd.the unit price(s) when profit is greatest

Acabinmaker buys 3.5 liters of oat varnish the varnish cost $4.95 per liter what is the total cost of 3.5 liters

Could someone me with this question i’ve been stuck on it for 20 minutes