Let a, = 5 a2 a3 2 determine what value(s) of a will make {a,,a2,as} a linearly dependent set. 2. (1 point) let t: r^4 --> r^2 be a transformation such that t(x) = ax. what size must a have in order to define such a mapping? ( type sizes with the $\times$ command rather than using an "x").

Assume cd | ab are parallel. find m2. a) x= 50° (b) x = 70° c) x = 30° d) x = 60

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items