Answer 10.
A bag contains (n + 7) tennis balls.
n of the balls are yellow.
The other 7 balls are white.
John will take at random a ball from the bag.
He will look at its colour and then put it back in the bag.
Write down an expression, in terms of n, for the probability that John will take a white ball.

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 33 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30 ∘c on monday, but decreased at a constant rate in the next 33 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.

What is the equation of a line passing through the point (6,1) and parallel to the line whose equation 3x=2y+4

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)